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319429

INFLUENCE OF MULTI-PASS GTAW PARAMETERS ON MICROSTRUCTURE CHARACTERIZATION AND MECHANICAL PROPERTIES OF SAF 2507 SUPER DUPLEX STAINLESS STEEL

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Last updated: 25 Dec 2024

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Abstract

In the present work, a 6 mm thickness SAF 2507-SDSS were welded by multi-pass gas tungsten arc welding (GTAW) process with ER2594 electrode using different heat inputs. Microstructure and mechanical properties of SAF 2507 joints obtained from multi-pass GTAW processes were investigated. The obtained joint was evaluated and characterized by using visual inspection, radiographic test, liquid penetrant test, optical microscopy, scanning electron microscopy, tensile and hardness test. The results obtained have shown that the type of filler electrode, heat input, and interpass temperature are the controlling factors in achieving a sound weld joint. The multi-pass GTAW of 2507 SDSS exhibited an enhancement in both hardness and yield strength compared to the base metal. In the welded zone, there were three distinct forms of austenite: Widmanstatten austenite (WA), intra-granular austenite (IGA), and grain boundary austenite (GBA), along with the presence of ferrite.  The number of welding passes and heat input had a significant impact on the α:γ ratio. The content of ferrite in the welded zone is relatively close to the equilibrium ratio of the base metal and did not exhibit significant fluctuations when employing various welding parameters.

DOI

10.21608/jest.2023.319429

Keywords

GTAW, Mechanical Properties, SAF 2507 SDSS, ferrite content, Heat input, Microstructure

Authors

First Name

A. S.

Last Name

Ali

MiddleName

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Affiliation

Mechanical Engineering Dept., Faculty of Engineering, Suez Canal University, EGYPT

Email

eng_ahmed_yossef@hotmail.com

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First Name

M. El-Sayed Seleman

Last Name

Mohamed

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Affiliation

Department of Metallurgical and Materials Engineering, Faculty of Petroleum and Mining Engineering, Suez University, Suez 43512, Egypt

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Orcid

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First Name

M. Z. Ahmed

Last Name

Mohamed

MiddleName

-

Affiliation

Department of Metallurgical and Materials Engineering, Faculty of Petroleum and Mining Engineering, Suez University, Suez 43512, Egypt, Mechanical Engineering Dep., College of Engineering at Al Kharj, Prince Sattam Bin Abdulaziz University, Al Kharj 16273, Saudi Arabia

Email

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Orcid

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First Name

R. I.

Last Name

Elsoeudy

MiddleName

-

Affiliation

Mechanical Engineering Dept., Faculty of Engineering, Suez Canal University, EGYPT

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Orcid

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First Name

Abd Elaal Mahmoud

Last Name

Eslam

MiddleName

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Affiliation

Siemens-energy Company, Cairo, Egypt.

Email

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City

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Orcid

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First Name

Kamel

Last Name

Madeha

MiddleName

-

Affiliation

Mechanical Engineering Dept., Faculty of Engineering, Suez Canal University, EGYPT

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-

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Volume

20

Article Issue

4

Related Issue

43731

Issue Date

2023-10-01

Receive Date

2023-10-01

Publish Date

2023-10-01

Page Start

12

Page End

26

Print ISSN

2090-5882

Online ISSN

2090-5955

Article File

JEST_Volume 20_Issue 4_Pages 12-26.pdf

PDF . 1.7MB

Link

https://jest.journals.ekb.eg/article_319429.html

Detail API

https://jest.journals.ekb.eg/service?article_code=319429

Order

319,429

Type

Original Article

Type Code

1,211

Publication Type

Journal

Publication Title

Journal of the Egyptian Society of Tribology

Publication Link

https://jest.journals.ekb.eg/

MainTitle

INFLUENCE OF MULTI-PASS GTAW PARAMETERS ON MICROSTRUCTURE CHARACTERIZATION AND MECHANICAL PROPERTIES OF SAF 2507 SUPER DUPLEX STAINLESS STEEL

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Article

Created At

25 Dec 2024